In 1888 Roberts moved to
Chicago where he worked as a site superintendent for
S.S. Beman at
Pullman, on the south side of the city. Roberts remained at that job until 1893. Roberts moved to the Chicago suburb of Oak Park in 1893 and established his own practice which eventually grew to become the largest architecture firm in the village of Oak Park, rivaling even architecture giant
Frank Lloyd Wright's practice. Wright and Roberts were not, themselves, professionally associated, other than the fact that they were competing architects. Once in Oak Park Roberts focused on residential work until he moved his office to Chicago in 1912 where he focused on larger, commercial projects. Roberts' practice in Oak Park grew quickly and he soon employed several draftsmen. Despite eventually working in Chicago, Roberts remained an Oak Park resident until he died in 1943. Roberts and his wife Rossie Roberts (
née Willey) lived in the
Eben Ezra Roberts House on Superior Street in Oak Park for most of the time they were in the village. At that home, now a
contributing property to the U.S. federally Registered
Frank Lloyd Wright-Prairie School of Architecture Historic District, Roberts and his wife raised their two children Margaret and
Elmer C. Roberts. In 1930 the pair designed the Borden Dairy Building on Vincennes Road in
Blue Island, Illinois in the
Art Deco style. ==Works and style==